A ground borehole opening protection device

Abstract

The application relates to the technical field of ground drilling protection, in particular to a ground drilling opening protection device, the lower side of a middle rotating rod is provided with a quick-release replacement assembly, the quick-release replacement assembly can be quickly detached from the middle rotating rod; the upper side of the middle rotating rod is provided with an emergency disconnecting protection assembly, when a large stone block is encountered and a worker exerts force on the ground drill downwards, the emergency disconnecting protection assembly can automatically disconnect linkage between the ground drill and the middle rotating rod, the rotating top plate does not limit the transmission pin, therefore, when the transmission pin is separated from the insertion groove, the power transmission rod cannot rotate with the middle rotating rod, therefore, when the ground drill encounters a large stone block, the power assembly on the ground drill can be disconnected with the drilling assembly, so that the out-of-control of the spiral blade can be avoided, the worker operating the ground drill is ensured to be safe, and the emergence of the damage of other positions of the land can be avoided.

Description

Technical Field

[0001] This invention relates to the field of borehole protection technology, specifically a borehole opening protection device. Background Technology

[0002] Ground drills are widely used in planting pits for seedlings and landscaping projects on slopes, sandy lands, and hard soils; excavating soil around large trees; digging holes for fencing stakes; digging holes for fertilizing fruit trees and forest trees; and cultivating soil in landscaping projects. Ground drills are mainly composed of a handle, a power unit, and a spiral blade. The bottom of the ground drill has an opening plate. Due to the soil breaking during drilling, in actual use, the operator needs to hold the handle with both hands and start the power unit to make the spiral blade rotate. Then the ground drill is used vertically downwards. During the drilling process, the operator needs to operate the handle to press the ground drill downwards to make the ground drill make downward drilling operations.

[0003] However, while drilling can avoid rocks on the ground surface, it requires drilling a hole to a certain depth. Before drilling, there is a risk that the drill may encounter rocks below the ground. If the rocks are too large, the drill may have difficulty drilling downwards. If the worker applies force downwards, it may damage the pre-drilling plate, affecting the efficiency of subsequent drilling. Also, if a large rock blocks the drill's downward movement and the worker applies force, it may cause instability at the drilling site, making the drill slip out of the worker's control and potentially causing injury. Summary of the Invention

[0004] The purpose of this invention is to provide a borehole opening protection device to solve the problems mentioned above.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a borehole opening protection device, comprising a central rotating rod, wherein a connecting threaded groove is provided on the lower side of the central rotating rod, wherein symmetrical internal grooves are provided inside the central rotating rod, and symmetrical interconnecting grooves are provided on the central rotating rod, wherein a spiral blade is fixedly sleeved on the outside of the central rotating rod;

[0006] A quick-release replacement assembly is provided on the lower side of the central rotating rod, wherein the quick-release replacement assembly can be quickly removed from the central rotating rod;

[0007] An emergency disconnection protection component is installed on the upper side of the central rotating rod. When encountering a large rock and when the worker applies downward force to the drill, the emergency disconnection protection component will automatically disconnect the linkage between the drill and the central rotating rod.

[0008] Preferably, the interconnecting groove and the content groove are interconnected, wherein a linkage protrusion is provided through the interconnecting groove, and a reinforcing rod is fixedly connected to the linkage protrusion, wherein the reinforcing rod is located inside the content groove, and the reinforcing rod is provided through the lower side of the central rotating rod, wherein a first spring is provided on the upper side of the reinforcing rod.

[0009] Preferably, the quick-release replacement assembly includes a splicing rod, a pressure transmission rod, an opening plate, a buffer pad, a pressure detector, a drive rod, and a sector gear. The pressure transmission rod passes through the lower side of the splicing rod, the opening plate is fixed to the side of the pressure transmission rod outside the splicing rod, the buffer pad is fixed to the bottom of the splicing rod, the pressure detector is installed inside the splicing rod, the drive rod is movably connected inside the splicing rod, and the sector gear is fixed to the drive rod.

[0010] Preferably, the splicing and disassembly rod is located below the central rotating rod, and the pressure transmission rod is located below the pressure detector. The pressure transmission rod passes through the buffer septum, which is located between the splicing and disassembly rod and the opening plate. The splicing and disassembly rod is provided with a threaded post for fixed connection, and the splicing and disassembly rod is provided with an adjustable toothed rod inside.

[0011] Preferably, the adjusting gear is provided with a fixedly connected linkage rod, wherein the linkage rod passes through the splicing disassembly rod and the central rotating rod in sequence, and a fixedly connected square sleeve rod is fitted on the linkage rod, wherein a fixedly connected pitch-increasing disc is fitted on the lower side of the square sleeve rod, and a limiting disc is fitted on the side of the square sleeve rod away from the pitch-increasing disc, wherein the limiting disc is fixed on the central rotating rod.

[0012] Preferably, a second spring is fitted on the square sleeve rod, the second spring being located between the limiting disc and the increasing disc, wherein a fixedly connected expansion block is fitted on the linkage through rod, and a fixedly connected pressure block is provided on the side of the linkage through rod away from the adjusting gear, wherein anti-rotation holes are symmetrically opened on the threaded column.

[0013] Preferably, the emergency disconnection protection assembly includes a power transmission rod, a tension cylinder, a plug slot, a rotating top plate, a positioning stop, and a sliding sleeve, wherein the tension cylinder is fixed on the power transmission rod, the rotating top plate is movably connected to the power transmission rod, the positioning stop is fixed on the power transmission rod, and the sliding sleeve is disposed on the lower side of the power transmission rod.

[0014] Preferably, the power transmission rod is located on the upper side of the central rotating rod, the positioning stop is located on the lower side of the rotating top plate, the sliding sleeve is sleeved on the central rotating rod, the sliding sleeve has symmetrical upper and lower sliding grooves inside, the upper and lower sliding grooves are provided with sliding blocks inside, the sliding blocks are fixed on the central rotating rod, and the sliding sleeve has symmetrical locking holes, the locking holes are interconnected with the upper and lower sliding grooves.

[0015] Preferably, a locking rod is provided through the middle of the sliding block, wherein a spacer ring is sleeved on the locking rod, and a third spring is sleeved on the locking rod.

[0016] Preferably, a fixedly connected fitting block is provided on the side of the locking rod away from the locking hole, and fixedly connected transmission pins are evenly provided on the sliding sleeve, wherein the transmission pins are provided with grooves.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The splicing and disassembly rod can be quickly connected to the connecting threaded groove on the central rotating rod via a threaded post, thus enabling rapid connection and disassembly between the splicing and disassembly rod and the central rotating rod. After the splicing and disassembly rod is quickly disassembled, the opening plate can be quickly replaced. During the process of the threaded post connecting to the central rotating rod via the connecting threaded groove, the threaded post will first abut against the reinforcing rod, causing the reinforcing rod to retract inside the inner groove. At the same time, the first spring will store force and deform. Subsequently, when the anti-rotation hole corresponds to the position of the reinforcing rod, the reinforcing rod will be inserted into the anti-rotation hole. At this time, the threaded post will not rotate. This prevents the splicing and disassembly rod from loosening and falling off during the drilling process.

[0019] As the linkage rod moves upward, the spreading block stops pushing against the mating block. At this time, under the action of the third spring, the locking rod disengages from the locking hole. Furthermore, the rotating top plate no longer restricts the transmission pin. Therefore, after the transmission pin disengages from the insertion slot, the power transmission rod cannot rotate with the central rotating rod. Thus, when the ground drill encounters a large rock, the power component on the ground drill can be disconnected from the drilling component. This prevents the spiral blades from going out of control, provides safety for the ground drill operator, and avoids damage to other parts of the land. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 2 This is a half-section perspective view of the rotating rod in the middle of the present invention.

[0022] Figure 3This is a right-side half-section view of the rotating rod in the middle of the present invention.

[0023] Figure 4 This is a three-dimensional sectional view of the splicing and disassembly rod of the present invention.

[0024] Figure 5 This is a three-dimensional schematic diagram of the linkage rod of the present invention.

[0025] Figure 6 This is a three-dimensional schematic diagram of the square sleeve rod of the present invention.

[0026] Figure 7 This is a right-side view of the sector gear of the present invention.

[0027] Figure 8 This is a three-dimensional half-section diagram of the tension cylinder of the present invention.

[0028] Figure 9 This is a schematic diagram of the right side of a half-section of the tension cylinder of the present invention.

[0029] Figure 10 This is a half-sectional perspective view of the sliding sleeve of the present invention.

[0030] In the diagram: 1. Central rotating rod; 11. Connecting threaded groove; 12. Inner groove; 13. Interconnecting groove; 1301. Linkage protrusion; 1302. Reinforcing fixed rod; 1303. First spring; 14. Spiral blade; 2. Splicing disassembly rod; 201. Threaded column; 202. Adjusting gear; 203. Linkage through rod; 204. Square sleeve rod; 205. Extending disc; 206. Restricting disc; 207. Second spring; 208. Spreading block; 209. Lowering block; 2010. Anti-rotation hole; 21. Pressure transmitter 22. Feeding rod; 23. Opening plate; 24. Buffer pad; 25. Pressure detector; 26. Drive rod; 27. Sector gear; 38. Power transmission rod; 39. Tension cylinder; 30. Insertion groove; 31. Rotating top plate; 32. Positioning stop; 33. Sliding sleeve; 34. Upper and lower sliding grooves; 35. Sliding block; 35. Locking hole; 36. Locking rod; 37. Spacer ring; 38. Third spring; 39. Adhesive block; 30. Transmission pin; 30. Groove. Detailed Implementation

[0031] The features and exemplary embodiments of various aspects of the present invention will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention may be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention. The invention is by no means limited to any specific configurations and algorithms presented below, but covers any modifications, substitutions, and improvements to elements, components, and algorithms without departing from the spirit of the invention. Well-known structures and techniques are not shown in the drawings and the following description in order to avoid unnecessarily obscuring the invention.

[0032] Please see Figures 1 to 10 The present invention provides a technical solution: including a central rotating rod 1, a connecting thread groove 11 is provided on the lower side of the central rotating rod 1, wherein the interior of the central rotating rod 1 is symmetrically provided with internal grooves 12, and the upper part of the central rotating rod 1 is symmetrically provided with interconnecting grooves 13, wherein a spiral plate 14 is fixedly sleeved on the outside of the central rotating rod 1.

[0033] A quick-release replacement assembly is provided on the lower side of the central rotating rod 1, wherein the quick-release replacement assembly can be quickly removed from the central rotating rod 1;

[0034] An emergency disconnection protection component is installed on the upper side of the central rotating rod 1. When encountering a large rock and when the worker applies downward force to the drill, the emergency disconnection protection component will automatically disconnect the linkage between the drill and the central rotating rod 1.

[0035] The interconnecting groove 13 and the inner groove 12 are interconnected. A linkage protrusion 1301 is provided through the interconnecting groove 13, and a reinforcing rod 1302 is fixedly connected to the linkage protrusion 1301. The reinforcing rod 1302 is located inside the inner groove 12 and passes through the lower side of the central rotating rod 1. A first spring 1303 is provided on the upper side of the reinforcing rod 1302. After passing through the central rotating rod 1, the reinforcing rod 1302 extends into the inner part of the connecting threaded groove 11.

[0036] The quick-release replacement assembly includes a splicing rod 2, a pressure transmission rod 21, an opening plate 22, a buffer pad 23, a pressure detector 24, a drive rod 25, and a sector gear 26. The pressure transmission rod 21 passes through the lower side of the splicing rod 2. The opening plate 22 is fixed to the side of the pressure transmission rod 21 outside the splicing rod 2. The buffer pad 23 is fixed to the bottom of the splicing rod 2. The pressure detector 24 is installed inside the splicing rod 2. The drive rod 25 is movably connected inside the splicing rod 2 and is connected to the splicing rod 2 via a rotating shaft. The drive rod 25 is driven to rotate by a micro motor, which is installed on the splicing rod 2. The micro motor and the pressure detector 24 are connected for signal transmission. The sector gear 26 is fixed to the drive rod 25.

[0037] The splicing rod 2 is located below the central rotating rod 1, with the pressure transmission rod 21 located below the pressure detector 24. The pressure transmission rod 21 passes through the buffer septum 23, which is positioned between the splicing rod 2 and the opening plate 22. The opening plate 22 is screwed onto the pressure transmission rod 21, facilitating its disassembly. The splicing rod 2 is equipped with a fixed threaded post 201 and an adjusting gear 202 inside. The splicing rod 2 can be quickly screwed onto the connecting threaded groove 11 on the central rotating rod 1 using the threaded post 201, enabling rapid connection and disassembly between the splicing rod 2 and the central rotating rod 1. This allows for quick replacement of the opening plate 22 after the splicing rod 2 is disassembled.

[0038] During the use of the ground drill, when encountering large rocks, the opening plate 22 will come into contact with the large rocks. When the worker presses down on the ground drill, the opening plate 22 will generate a pressure greater than the pressure used when drilling. Subsequently, the pressure on the opening plate 22 will act on the pressure detector 24 through the pressure transmission rod 21. Since the pressure is greater than the normal value, the pressure detector 24 will cause the micro motor to drive the drive rod 25 to rotate, thereby the drive rod 25 drives the sector gear 26 to rotate.

[0039] A linkage rod 203 is fixedly connected to the adjusting gear 202. The linkage rod 203 passes through the splicing disassembly rod 2 and the central rotating rod 1 in sequence. A square sleeve rod 204 is fixedly connected to the linkage rod 203. A pitch-increasing disc 205 is fixedly connected to the lower side of the square sleeve rod 204. The pitch-increasing disc 205 is located below the linkage protrusion 1301. A limiting disc 206 is fitted on the side of the square sleeve rod 204 away from the pitch-increasing disc 205. The limiting disc 206 is fixed to the central rotating rod 1.

[0040] A second spring 207 is fitted on the square sleeve rod 204. The second spring 207 is located between the limiting disc 206 and the pitch increasing disc 205. A fixedly connected support block 208 is fitted on the linkage through rod 203. A fixedly connected lower pressure block 209 is provided on the side of the linkage through rod 203 away from the pitch adjusting gear 202. Anti-rotation holes 2010 are symmetrically opened on the threaded column 201. During the threaded connection between the threaded column 201 and the central rotating rod 1 via the connecting threaded groove 11, the threaded column 201 will first abut against the reinforcing rod 1302, causing the reinforcing rod 1302 to contract inside the inner groove 12. At the same time, the first spring 1303 will undergo a stored deformation. Subsequently, when the anti-rotation hole 2010 corresponds to the position of the reinforcing rod 1302, the reinforcing rod 1302 will be inserted into the anti-rotation hole 2010. At this time, the threaded column 201 will not rotate, thus preventing the splicing rod 2 from loosening and falling off during the drilling process.

[0041] The emergency disconnect protection assembly includes a power transmission rod 3, a tension cylinder 31, a insertion slot 32, a rotating top plate 33, a positioning stop 34, and a sliding sleeve 35. The tension cylinder 31 is fixed to the power transmission rod 3. The rotating top plate 33 is movably connected to the power transmission rod 3 via a torsion spring. A corresponding through-slot is formed on the power transmission rod 3 corresponding to the rotating top plate 33. The power transmission rod 3 is fixedly connected to the power component of the drilling rig, allowing the power transmission rod 3 to rotate. The positioning stop 34 is fixed to the power transmission rod 3, and the sliding sleeve 35 is located on the lower side of the power transmission rod 3. The top of the linkage rod 203 is inserted into the interior of the power transmission rod 3.

[0042] The power transmission rod 3 is located on the upper side of the central rotating rod 1, and the positioning stop rod 34 is located on the lower side of the rotating top plate 33. The positioning stop rod 34 can limit the position of the rotating top plate 33 to prevent excessive rotation of the rotating top plate 33. The sliding sleeve 35 is sleeved on the central rotating rod 1. The sliding sleeve 35 has symmetrical upper and lower sliding grooves 3501 inside. The upper and lower sliding grooves 3501 are provided with sliding blocks 3502 inside. The sliding blocks 3502 are fixed on the central rotating rod 1. The sliding sleeve 35 has symmetrical locking holes 3503, and the locking holes 3503 are interconnected with the upper and lower sliding grooves 3501.

[0043] A locking rod 3504 is provided through the middle of the sliding block 3502. A spacer ring 3505 is sleeved on the locking rod 3504. A third spring 3506 is sleeved on the locking rod 3504. A round hole corresponding to the locking rod 3504 is opened on the splicing rod 2. The locking rod 3504 is provided through the round hole. The spacer ring 3505 is fixed on the splicing rod 2. A fixedly connected fitting block 3507 is provided on the side of the locking rod 3504 away from the locking hole 3503. A fixedly connected transmission pin 3508 is evenly provided on the sliding sleeve 35. A groove 3509 is opened on the transmission pin 3508. The transmission pin 3508 is inserted into the insertion slot 32. The pressing block 209 presses down on the rotating top plate 33, causing the rotating top plate 33 to abut against the transmission pin 3508, thereby locking the position of the transmission pin 3508. The spreading block 208 pushes the locking rod 3504 with the help of the fitting block 3507, causing the locking rod 3504 to be inserted into the locking hole 3503, thereby locking the position of the sliding sleeve 35. At this time, the rotation of the power transmission rod 3 will cause the central rotating rod 1 to rotate, and the central rotating rod 1 will cause the splicing rod 2 to rotate.

[0044] When the drive rod 25 rotates with the sector gear 26, the sector gear 26 drives the adjusting gear 202, causing the adjusting gear 202 and the linkage rod 203 to move upward. Then the square sleeve rod 204 moves along the limiting disc 206, and the second spring 207 will undergo energy storage deformation. At the same time, the extension disc 205 can push the linkage protrusion 1301, thereby realizing that the reinforcing fixed rod 1302 leaves the interior of the anti-rotation hole 2010. Therefore, when the opening plate 22 collides with the stone, it is also easy to be damaged. At this time, the splicing disassembly rod 2 can be directly disassembled and the opening plate 22 can be replaced.

[0045] During the upward movement of the linkage rod 203, the spreading block 208 no longer pushes against the fitting block 3507. At this time, under the action of the third spring 3506, the locking rod 3504 disengages from the locking hole 3503. Furthermore, the rotating top plate 33 no longer restricts the transmission pin 3508. Therefore, after the transmission pin 3508 disengages from the insertion slot 32, the power transmission rod 3 cannot rotate the central rotating rod 1. Thus, when the ground drill encounters a large rock, the power component on the ground drill can be disconnected from the drilling component. This can prevent the spiral blade 14 from going out of control, provide safety for the personnel operating the ground drill, and prevent damage to other parts of the land.

[0046] Different technical features appearing in different embodiments can be combined to achieve beneficial effects. Those skilled in the art, based on a study of the drawings, specification, and claims, should be able to understand and implement other variations of the disclosed embodiments. In the claims, the term "comprising" does not exclude other means or steps; the indefinite article "a" does not exclude a plurality; the terms "first" and "second" are used to identify names rather than to indicate any particular order. No reference numerals in the claims should be construed as limiting the scope of protection. The functionality of multiple parts appearing in the claims can be implemented by a single hardware or software module. The appearance of certain technical features in different dependent claims does not mean that these technical features cannot be combined to achieve beneficial effects.

Claims

1. A borehole opening protection device, comprising a central rotating rod (1), wherein a connecting threaded groove (11) is provided on the lower side of the central rotating rod (1), wherein an internal groove (12) is symmetrically provided inside the central rotating rod (1), and an interconnecting groove (13) is symmetrically provided on the central rotating rod (1), wherein a spiral blade (14) is fixedly sleeved on the outside of the central rotating rod (1). Its features are: A quick-release replacement assembly is provided on the lower side of the central rotating rod (1), wherein the quick-release replacement assembly can be quickly removed from the central rotating rod (1); An emergency disconnection protection component is provided on the upper side of the central rotating rod (1). When encountering a large rock and when the worker applies downward force to the ground drill, the emergency disconnection protection component will automatically disconnect the linkage between the ground drill and the central rotating rod (1). The quick-release replacement assembly includes a splicing rod (2), a pressure transmission rod (21), an opening plate (22), a buffer pad (23), a pressure detector (24), a drive rod (25), and a sector gear (26). The pressure transmission rod (21) is installed through the lower side of the splicing rod (2). The opening plate (22) is fixed on the side of the pressure transmission rod (21) outside the splicing rod (2). The buffer pad (23) is fixed at the bottom of the splicing rod (2). The pressure detector (24) is installed inside the splicing rod (2). The drive rod (25) is movably connected inside the splicing rod (2). The sector gear (26) is fixed on the drive rod (25). The splicing and disassembly rod (2) is located below the central rotating rod (1), wherein the pressure transmission rod (21) is located below the pressure detector (24), the pressure transmission rod (21) is installed through the buffer septum (23), wherein the buffer septum (23) is located between the splicing and disassembly rod (2) and the opening plate (22), the splicing and disassembly rod (2) is provided with a fixedly connected threaded post (201), and the splicing and disassembly rod (2) is provided with an adjustable pitch gear (202) inside; The adjustable gear (202) is provided with a fixedly connected linkage rod (203), wherein the linkage rod (203) passes through the splicing disassembly rod (2) and the central rotating rod (1) in sequence. A fixedly connected square sleeve rod (204) is fitted on the linkage rod (203), wherein a fixedly connected pitch-increasing disc (205) is fitted on the lower side of the square sleeve rod (204), and a limiting disc (206) is fitted on the side of the square sleeve rod (204) away from the pitch-increasing disc (205), wherein the limiting disc (206) is fixed on the central rotating rod (1).

2. The borehole opening protection device according to claim 1, characterized in that: The interconnecting groove (13) and the content groove (12) are interconnected. A linkage protrusion (1301) is provided through the interconnecting groove (13). A reinforcing rod (1302) is fixedly connected to the linkage protrusion (1301). The reinforcing rod (1302) is located inside the content groove (12). The reinforcing rod (1302) is provided through the lower side of the central rotating rod (1). A first spring (1303) is provided on the upper side of the reinforcing rod (1302).

3. The borehole opening protection device according to claim 2, characterized in that: The square sleeve rod (204) is fitted with a second spring (207), which is located between the limiting disc (206) and the pitch increasing disc (205). The linkage through rod (203) is fitted with a fixedly connected support block (208). The linkage through rod (203) is provided with a fixedly connected pressure block (209) on the side away from the pitch adjusting gear (202). The threaded column (201) is symmetrically provided with anti-rotation holes (2010).

4. The borehole opening protection device according to claim 3, characterized in that: The emergency disconnect protection assembly includes a power transmission rod (3), a tension cylinder (31), a plug slot (32), a rotating top plate (33), a positioning stop (34), and a sliding sleeve (35). The tension cylinder (31) is fixed on the power transmission rod (3), the rotating top plate (33) is movably connected to the power transmission rod (3), the positioning stop (34) is fixed on the power transmission rod (3), and the sliding sleeve (35) is located on the lower side of the power transmission rod (3).

5. A borehole opening protection device according to claim 4, characterized in that: The power transmission rod (3) is located on the upper side of the central rotating rod (1), and the positioning stop (34) is located on the lower side of the rotating top plate (33). The sliding sleeve (35) is sleeved on the central rotating rod (1). The sliding sleeve (35) has symmetrical upper and lower sliding grooves (3501) inside. The upper and lower sliding grooves (3501) are provided with sliding blocks (3502) inside. The sliding blocks (3502) are fixed on the central rotating rod (1). The sliding sleeve (35) has symmetrical locking holes (3503) on it. The locking holes (3503) are interconnected with the upper and lower sliding grooves (3501).

6. The borehole opening protection device according to claim 5, characterized in that: A locking rod (3504) is provided through the middle of the sliding block (3502), wherein a spacer ring (3505) is sleeved on the locking rod (3504), and a third spring (3506) is sleeved on the locking rod (3504).

7. A borehole opening protection device according to claim 6, characterized in that: The locking rod (3504) is provided with a fixedly connected fitting block (3507) on the side away from the locking hole (3503), and the sliding sleeve (35) is provided with fixedly connected transmission pins (3508), wherein the transmission pins (3508) are provided with grooves (3509).

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